Glass-blowing apparatus



' i a' resident of Arnold, yin thecounty of Westmoreland, and -FERNAND M. FRANCART andy GEORGE C.'DEBAY, residents of Springdale,

m'rED STATES PATENT oEEicE.

WAEEEN D. GUMPP, E ARNOLD, AND EEENANDM. ERANCAET AND GEORGE c. DEEAY,

0E 'SPEINGDALE PENNSYLVANIA.

GLAss-ELQWING APPARATUS.

Appncation flied August 11, i915. seriai No. 45,011.

ATo all whom t may concer-n Be it known that we, WARREN DiG'MPP,

in vthe county of Allegheny,-State ofl Pennsylvania, citizens of the United States,ihave invented a. new and useful Improvement in Glass- Blowing Apparatus; and we do hiere-` bv declare-the following to'be a full,clear,

and exact description tliereof.

Our invention relates to glass blowingl apparams, and more particularly to apparatus adaptedfor use in formation'of glass-cylin.-

ders for the manufacture of window-glass. l Byour invention we, made provision forL .raising the molten glassfup in position to(V be engagedby the bait, whereupon the receptacle containing they glass is lowered and, at

the same time, air'isa'dmitted automatically to iiiflate'the mass'of glass', which is suspended.v from the bait, and as the receptacle u containing -the Amolten glass continues to lower, further additions of air -are admitted so as to properlyprovide forthe eXpaiision 4'of the glass intothe form of a "cylinder, all

, as fully hereinafter vset forth and claimed lso In the accompanying drawing, .Figure 1 is a sectional elevation of ourlimpoved apparatus; Fig. 2 is a section on the line 2 2, Fig. 1; Figs. 3,4and 5.are details of the 'valves employed.

'-ni'olten glass. The top 7 of the elevator-'cage .is connected 'up with the cable. 8, which passes over the sheaves 9 on the overhead-2 frame 10. The' opposite endvof the cable 8 is connected lupl to the piston-rod l1l of the ar'cylinder 12,'said piston-rod having the piston 13 adapted tom-ove up and'down lin said cylinder. Connected tothe piston 13 is the weight 14, which acts to connterbaL,

ance the cage 4 and the pot carried thereby.

An air-pipe 15 leading from av suitable l compressor is connectedv up' to the upper end' of the Acylinder 112. AThe valve 16 is proswingingfframe 38;

'37 'engages the short arm 39' of the vbell-crank 36, and the evpansion and contraction ofthe vided inthe pipe l15 to control the-Supply of.

specicatim of Lettersratent. Patented Aug, 15, 1916;.

Connect-ed to the piston-rod -11 is the tap pet-arm 17, which engages the rod 18 interf mediate the collars 19 and 20 on said rod '18,. The rod 18 is connected. to the piston valve 21 in the valve chamber 22 at the up- -per end of the cylinder 12, said valvecontrolling the port 23.

-A pivotally mounted -iinger 24 hasthe beveled face25 ywhich'is adapted to engage the collar 20, the spring 26- acting to hold said finger in engagement with said collar, said finger acting to hold said collar andthe .valve 2 1 when said tappet-arm 17 ascends.

y A pipe v27 is connected lwith the valve chamber-.22, said' pipe carrying the air to' the chamber which ,is connected bythe short pipe section 29 with' the suitablebait 30. A valve 31 controls the supply of air passing through the' pipe 27,'and details of said valve are ,shown in Fig. 4. The valve 'proper 32 is normally held to its seat by the"v spring 33. The stem 34 extends outside thef valve casing; andthe -arm 35 of thc/bell@ crank 3G, which is mounted onthe'frame 38,

engages the. outer end of the stem 34. This valve 'is operated by thermostatic action, and to this end, the rod '37 is. mounted in, the lhe outer end of the rod rod 37 acts'through said bell-crank to .operate the valve -31 inthe mannerfullyherein- 'v .after set forth.

A branch'pipe 40 isconnected up With the pipe 27 and communicates with the chainber 28.' This branch pipe 40 is made upof' ,tion 42. The enlarged portion 45 of .the

sliding sleeve,43 forms a valve chamber with valve being connected up to the section 41.

The section 41 has the enlarged portion 48 with the tliread-s 49, whichv are engaged by the threaded portion 50 of the enlarged por# tion 45 of the sleeve 43. It will be apparent that if the sleeve 43 iscauSed to rotate, the

' 'a seat 46 forthe needle val-ve 47 ,S said needlel sleeve moving on the lsection 42 will .act to open and close the needle valve, which remains stationary. To provide for this rota-V tion of the sleeve 43, said sleeve has the pulley portion l51, which is engaged by the belt 52, said belt passing up and around the pulley 53 on the stub-shaft 54 mounted in the,

frame 3. The stub-shaft 54: carries the large sheave' low the platform 2. Rotation is imparted to the sheave 55l by the movement of the elevator-cage and au'arm 58 extending out from the lower end 'of the elevator-cage en ygages the belt 56. From the above, it will be apparent that as the elevator-cage ascends, the sheave 55 will be rotated, and through-the small pulley 53 a rotary movenient will be imparted to the sleeve 4:3 sutilcient t'oact to close the needle valve; or, on the descent of said elevator-cage, aV reverse action takes place 1and the opening of thel needle valve is effec-ted.

' A gas pipe 59 is'connected up with the 'f suitable gas supply, and a valve is provided in said pipe, which valve is illustrated in detail in Fig. 5. This valve is of the needle type, having the needle 61 which engages the valve seat 62,. A spring 63 acts to holdthe valve in a given ,adjusted position, which is controlled by the stop 64. 4As

'the needle valve always remains partially crank is adapted to engage the thermostatrod 70 mounted in the frame 71. It will be apparent that as-'the rod 70 contracts and expands, the supply of gas is regulated accordingly, and the gas valve is throttled as will more fully hereinafter appear.

A circular burner 7241s connected up with I the pipe 59,l said burner encircling the bait 30, and having openings inthe bottom thereof, which direct the gas Ijets against the lower. end of the bait 30 to obtain a proper heat and prevent undue chilling of the gas thereon. V v

Mounted in the frame 3 is the hood l73,

which may be formed of asbestos orany other suitable material, said hood normally resting on the shelf 74 of the frame 3 in the path of movement of the bottom 5 of the elevator-cage. This `hood 73, as illustrated in Fig. 2, is formed in two sections`75 and 76, pivoted at 77. These sections are provided with handles 78. Whenthe sections i are closed, a space 79 remains, which allows for the extension therethrough ofthe 'cylinder 80, which is being blown and for the A belt 56 passes around said ,sheave and around the sheave 57 located be-I radiation of heat for the operation of the thermostats.y l v p In the operation of our improved `apparatus, the'glass from which the cylinder is to be blown is contained in the pot.6, which is supplied from a suitable tank and brought to the apparatus tobe placed upon the bottom5 of the elevator-cage. When the pot 6 has been adjusted in position on the cage, the air is admitted by the plpe 15 to the upper end of the cylinder '12, and as the piston 13 descends, the' elevator-cage rises; and as it ascends, the hood l73- is picked up and said hood surrounding the pot 6 acts to protect the glass therein from the. atmosphere and retains -it at the proper heat. The elevator-caffe continues to ascend until the. pot has been raised to a point where the bait enters the molten glass and the elevator-cage comes to a standstill.

The heat radiated by the molten glass con tained in the pot 6 will act to expand the thermostat-rod 37, and as said rodexpands,

it will act through the bell-crank 36 to openr the valve 81. In the meantime, the valve 21 has been opened by th descent of the piston-rod 11 by the tappet-arm 17 eng'ag` ing the collar 20,'andveom`munication vfrom the4 cylinderv 12 to the pipe 27 has been opened. As the valve 31 has been opened 'in the manner above set forth, the air' passes to the ,chamber 28 and through the connection 29 to the bait. This sudden release of the air from4 the cylinder 12 will' relievefthe pressure onthe .piston 13,- and the Weight .1i-f.

of t-he elevator-cage and the potand parts connected therewith, vwill cause the elevatorcage to descend. Immediately upon the descent of the elevator-cage, the air admitted by the opening 'of the valve 31 will act tov 'n expand the glass connected to the bait and this sudden inru'shjof air acts on' the large los mass of glass at this point to blow out the glass to-form the cap portion 81 of the glass.4

cylinder. As the elevator-cage, descends, the thermostat-rod v37 gradually contracts,

cage descends, the sheave 55 "is rotated and through the connections described, the sleeve 43 is .rotated and the needle-valve 47 permittlng the 'valve 3l to close auto-. matically; but, at the same time, as said opens vgradually permitting the air to pass" by the branch pipe 410A into the chamber 2 8;-r

and thence to the bait.

to chill, a greater quantity of air is ad,

This needlevalve opens gradually so that as the glass beginsmitted to inflate the glass so that when the cylinder will be fully blown. I

To prevent the glass from congealing .on the lbait and collecting there so as' to prevent the proper operation of the bait,the gas jets fron4 .the yburner 72 are directed on 'to the bait, andthe supply. o f gas -is controlled by.,

pot has descended to its lowest position,.the I I .bina'tion of. avertically movable frame, a rethe thermostat 70. When the pot is up in its elevated position, the thermostat expands so as to throttle the'valve 60' and 'reduce the amount of gas. vWhen the pot descends, the

v action of the. thermostatis to throw open the valve'. 60 and permit "the greaterA quan- -tity of gas torow to the-burner so as to-I melt the glass and permit the withdrawal olfthe cylinder, leaving the bait clean for the next drawing operation.

lVhat we' claim is:

l. In glass vblowing apparatus, the com'- binationof a vertically moving frame, afreceptacle for .molten glass carried thereby, a

bait, a cylinder, a piston in said cylinder, connections between said, piston 'and 'said 'vertically movable frame, means Jfor admit.

ting air to said cylinder, and means operated by the movement of--said `pistonto admit the exhaust-:trom said cylinder into -sai'd bait.-

'In glass blowing apparatus, the coni-,

ceptacle for 'molten' glass carried thereby, a

bait, a oylindera,' piston' in said cylinder, connections between said: piston vand said movableframe, pipe connections between,

said cylinder, pipe j connections between. said" cylinder and said bait, -a valve controlling -said pipe connections, a piston-rod .con-

nected .to saidI valve, a tappet-arm on'said 4 5nation ofi-a vertically'movableframe, vafrepiston-rod, andcollanson said-rod' between' V v for 'raising and lowering same, a receptacle which said tappetarm' moves. A

45. In glass blowing apparatus, the comb-i1.

" ceptacle for molten glassarried thereby, a bait, means for supplying a1r.. to said bait,

valve controlling said-"air supply, a thermostat subject to thefheattoffsaid molten glass, and.connectionsfmetvveensaidfthermolsta-t and said 'valve'fo'r' openingsameto. admit air to'said bait when, the molten glass in 'saidlreceptacle is engaged by said bait.'

' 5. In glass blowing apparatus, the combination of' a vertically movable frame', a receptacle for molten yglass'carried thereby, a bait, means for raising, said frame to bring `*said* molten glass in contact with said bait,v

means for supplyingair to said bait; a valve controlling said air supply/a thermostat exposed ton-the heat 'from said receptacle 'when 44 raised, and. connections lbetween said ther-v 'mostat and said valve tofope'n the same.

apparatus lfor blowing glass, the

i tions" combination of. a vertically movable frame, a. receptacle' for molten glass carried thereby, a bait, means for raising said frame to bring said glass'into contact with'said bait,

means for supplying air-to said bait, a valve i controlling 'saidair'su'pplya thermostat,

rods exposed to the heat .from said receptacle, `a bell-crank, one armof'. said bellcranl' being engaged with said thermostat, A and the other arm of said bell-cranl'engaging 'the valve stem.

7. In apparatus for blowing glass, the

combination of-a. vertically movable frame, a receptacle for molten glasscarried' thereby', a bait,- means -for raising said'frame to Abring'said bait into contactwith said glass,

means for supplying air to -said'bait, a valve controlling said air supply, a thermostat-ex- Y posed to the heat 'of said 'glass when said re- .ceptacle is in itselevated position, means for lowering said frame, a supplementary air supply, a valve controlling same, and means for opening saidlast-named valveby. the

in@ frame.

downward movement of said vertically mov- In glass blowing apparatus, the combirnatifo'n ofa 'vertically moving frame, means for raising and lowering same, a receptacle for molten glass carried by said rame,'a b ait, means for. supplying airjto said bait, a 'thermostat-'exposed-to lthe heat off-said molten glassfwhen, said receptacle is in its raised position, 'a'valve-controlling said air v supply, connections Ibetween' said valve and vsaid thermostat, asupplementary air sup-A ply connected" to -said bait?, a rotary Vvalve controlling thefla'st-namedv air supply', and

' means for .operating said-.last-named Vvalve by tlie movement o? said vertically moving ramei v 9. In glassblowing apparatus, the combi- ,A

nation of a'. vertically movable frame, means for-molten glasscarr'ied by 'said frame,- a bait, means'ior supplymg air to'sald balt, a

surrounding said. bait, a ',valve controlling said "gas-pipe, a thermostat exposed. to 'the y heat. of 'said' molten'glass when said necep '.1-

tacle is in its raise position, and connecbet-'Ween 'said thermostat .andfsaid f 10. In apparatus for blowing ,@,gflass-Lth'e.-

combination'with a suitable frame, oa ver- .tically 'movable' frame" mounted therein,

means for' raisingand loweringsaid movi ableframea'` receptacle for holding molten .glass 'carried by 4saidm'ovable4 rame,a mov'- z-able hood supported'byf-s'aid irst-named v means tor Aframe in the path of Vsaid movable frame and' lifted thereby, a. bait', Iand .supplying .airlt'o said bait. 9 1-1. In apparatusl for blowing ,gliilsfs,v the -v combination wth'a suitable' frame, of a vertically -movable frame mounted therein,

means for raising and lowering said movable frame, a reoeptacle for carrying molten glass carried by said movable frame, a movable ,hooclsupported on said first-namedV .frame in the path of said'movable frame,

and looatedat a pointl above said receptacle when in its loWermost position, a bait, and means for supplying air to said bait.

In testimony whereof, We the said WAR- D. GUMPP, FnRNAND M. FRANCART' and CHAS. W. HANMVALT, JOI-IN E. MILsoM.

FERNAND M. FRANCRT.. i GEORGE C. DEBAY.-

Witnesses: y

ROBT. D. ToTTEN', JOHN F. WILL. 

